Title:
STEEL CORD
Document Type and Number:
Japanese Patent JP3213698
Kind Code:
B2
Abstract:
PROBLEM TO BE SOLVED: To obtain a long-lived steel cord, good in penetrability of a rubber, excellent in shape retaining properties and fatigue resistance of the cord and suitable for a radial tire by laying up core wires and side wires composed of high tensile strength steel wires.
SOLUTION: This steel cord is obtained by stranding side wires 4 composed of high tensile strength steel wires having 0.15-0.45 mm diameter in the same direction as that of the lay of core wires 3 at a ratio of lay pitch of the core wires 3 to that of the side wires 4 within the range of 1.2-2.5, laying up the 7-8 side wires 4 for the two core wires 3 so that the average clearance between the adjacent side wires 4 may be ≥0.02 and ≤0.07 mm and forming a two-ply lay steel cord 2. The resultant steel cord 2 is used as a ply cord or a belt cord to manufacture a pneumatic steel radial tire.
Inventors:
Kaoru Mizuma
Application Number:
JP10602497A
Publication Date:
October 02, 2001
Filing Date:
April 23, 1997
Export Citation:
Assignee:
Tokyo Rope Co., Ltd.
International Classes:
D07B1/06; B60C9/00; (IPC1-7): D07B1/06; B60C9/00
Domestic Patent References:
| JP62141144A | ||||
| JP610283A |
Attorney, Agent or Firm:
Takehiko Suzue (5 outside)